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Commit 8c67d06f3fd9 ("usb: Link the ports to the connectors they are
attached to") creates a link to the USB Type-C connector for every new
port that is added when possible. If component_add() fails,
usb_hub_create_port_device() prints a warning but does not unregister
the device and does not return errors to the callers.
Syzbot reported a "WARNING in component_del()".
Fix this issue in usb_hub_create_port_device by calling device_unregister()
and returning the errors from component_add().
Fixes: 8c67d06f3fd9 ("usb: Link the ports to the connectors they are attached to")
Reported-and-tested-by: syzbot+60df062e1c41940cae0f@syzkaller.appspotmail.com
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20220209164500.8769-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
c853685d11